UK R35 GT-R runs a 10.8s quarter mile at the Pod...
UK R35 GT-R runs a 10.8s quarter mile at the Pod...
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Godzilla

Original Poster:

2,034 posts

273 months

Thursday 17th September 2009
quotequote all
...today!

Ben Linney's GTC demonstrator did 10.87s @ 127mph, but even more impressively, the guy I did my initial runs at Surrey Rolling Road with has just done an 11.05 with just a remap, i.e. completely stock hardware down to the air filters and Y-pipe!

It will apparently be on some TV shows who are filming at Santa Pod today.
Wish I had known it was an open day or I would have gone along.

There are some vastly more modified GT-Rs in the US that have run better times, I think down to the 10.3s.
But they have bigger turbos, injectors, actuators, boost controllers etc.
Ben's car has none of the above.

Any of you who have been drag racing knows those are unbelievable times for virtually stock, 1740kg road cars running on runflats!

And to think, I briefly considered keeping mine stock... biggrin



Marf

22,907 posts

265 months

Thursday 17th September 2009
quotequote all
That is rather impressive smile

Diesel Meister

2,045 posts

225 months

Thursday 17th September 2009
quotequote all

Jaysus.

G-suit on the options list?

I recall A friend doing a 13.0x in his (tired looking but healthy feeling) £6k R32 GTR. He was happy until one of the guys with a drag-spec model pointed out that standard R32s should be able to manage at least 12.8 (their car was some crazy 600bhp+ 11-and-a-bit-with-a-fluffed-start job). Cue mod bug hehe

300bhp/ton

41,030 posts

214 months

Friday 18th September 2009
quotequote all
Godzilla said:
...today!

Ben Linney's GTC demonstrator did 10.87s @ 127mph, but even more impressively, the guy I did my initial runs at Surrey Rolling Road with has just done an 11.05 with just a remap, i.e. completely stock hardware down to the air filters and Y-pipe!

It will apparently be on some TV shows who are filming at Santa Pod today.
Wish I had known it was an open day or I would have gone along.

There are some vastly more modified GT-Rs in the US that have run better times, I think down to the 10.3s.
But they have bigger turbos, injectors, actuators, boost controllers etc.
Ben's car has none of the above.

Any of you who have been drag racing knows those are unbelievable times for virtually stock, 1740kg road cars running on runflats!

And to think, I briefly considered keeping mine stock... biggrin
That's quick no doubt. smile

What sort of HP is it really making at the motor? To shift 1740kg at that speed needs a lot, despite AWD and fancy computers.

Dave^

7,807 posts

277 months

Friday 18th September 2009
quotequote all
300bhp/ton said:
What sort of HP is it really making at the motor? To shift 1740kg at that speed needs a lot, despite AWD and fancy computers.
about 700 according to LetsTorqueBHP

http://www.letstorquebhp.com/calculator.asp

Power at Flywheel (BHP) : 700
Weight without Driver (KG) : 1740
Power to Weight Ratio (BHP Per Ton) : 408.76
0 - 60 (Secs) : 3.31
0 - 100 (Secs) : 6.65
60 - 100 (Secs) : 3.34
Quarter Mile (Secs) : 11.42
Terminal Speed (MPH) : 132.05
Drag Strip Quarter Mile (Secs) : 11.02
Drag Strip Terminal Speed (MPH) : 136.49

Shirely that can't be right?

Godzilla

Original Poster:

2,034 posts

273 months

Friday 18th September 2009
quotequote all
I reckon Ben's car is putting out about 600-ish tops. It's still running the stock turbos and injectors!

GT-Rs really do launch unfeasibly well. My car dynoed at 547hp and did 0-60 in 3.2s, 0-100mph in 7.6s when it was at just Stage 1.

300bhp/ton

41,030 posts

214 months

Friday 18th September 2009
quotequote all
Dave^ said:
300bhp/ton said:
What sort of HP is it really making at the motor? To shift 1740kg at that speed needs a lot, despite AWD and fancy computers.
about 700 according to LetsTorqueBHP

http://www.letstorquebhp.com/calculator.asp

Power at Flywheel (BHP) : 700
Weight without Driver (KG) : 1740
Power to Weight Ratio (BHP Per Ton) : 408.76
0 - 60 (Secs) : 3.31
0 - 100 (Secs) : 6.65
60 - 100 (Secs) : 3.34
Quarter Mile (Secs) : 11.42
Terminal Speed (MPH) : 132.05
Drag Strip Quarter Mile (Secs) : 11.02
Drag Strip Terminal Speed (MPH) : 136.49

Shirely that can't be right?
Personally don't think much of that site. Don't see how a drag strip can increase terminal speed, as that is about physics not grip off the line.

Also to get a car to trap 132-136mph over the 127 for the OP would take a lot more HP.

Or to put it this way a 638hp Corvette ZR1 only traps 130mph but is much lighter. I'd say the GTR being a fair bit heavier would need to be making more than that to trap 127mph.

And I know some will say about launch control and AWD and so on. But that affects ET not trap speed.

Godzilla

Original Poster:

2,034 posts

273 months

Friday 18th September 2009
quotequote all
I was just going to say the difference between a drag strip and a "real" 1/4 mile run, is that drag times have about 1 foot of rollout as the tyre moves before clearing the timing beam.

Not sure if that would affect terminal speed as much as that though?

snorkel sucker

2,705 posts

227 months

Friday 18th September 2009
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daft question maybe but do gear ratios not effect these times as well?? something letstorque cant calculate.

cracking time nonetheless though!

Wheelrepairit

3,024 posts

228 months

Friday 18th September 2009
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Yeah, but im sure a Porsche could do it faster/better

Sorry, me bad i know

300bhp/ton

41,030 posts

214 months

Friday 18th September 2009
quotequote all
snorkel sucker said:
daft question maybe but do gear ratios not effect these times as well?? something letstorque cant calculate.

cracking time nonetheless though!
yes they do, but more with ET than trap speed.

Essentially if you rolled off the start line gently and then hammered it you'd get a similar trap speed over the 1/4 mile, your time would be lousy (ET) though.

Strangely enough, the guys in the US often say that a better ET can result in a lower trap. I don't know exactly why (got a few theories and ideas).

e.g. a car running 13.7 @ 109mph, chuck some drag radials on it and few other things and it might run a 13.1 @108mph.

300bhp/ton

41,030 posts

214 months

Friday 18th September 2009
quotequote all
Wheelrepairit said:
Yeah, but im sure a Porsche could do it faster/better

Sorry, me bad i know
I suppose the question then is, if they could, were is it? confused

AJI

5,180 posts

241 months

Monday 21st September 2009
quotequote all
What is the torque figure on slightly modified GT-Rs ?
And I'm guessing the torque is rather high throughout the rev range.


MarkM3Evoplus

861 posts

224 months

Wednesday 23rd September 2009
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R35's transmission is supposedly very efficient losing around 10% - 11% (according to reports) rather than 20% plus of most 4wd cars, combined with the DSG style instant gearchange I suspect they accelerate as if they had 100bhp/100lb ft more.

Cheers,

300bhp/ton

41,030 posts

214 months

Thursday 24th September 2009
quotequote all
MarkM3Evoplus said:
R35's transmission is supposedly very efficient losing around 10% - 11% (according to reports) rather than 20% plus of most 4wd cars, combined with the DSG style instant gearchange I suspect they accelerate as if they had 100bhp/100lb ft more.

Cheers,
My question(s) would be, how is the drivetrain loss being determined? If its just a guess based on rolling road dyno's compared to Nissan claimed outputs then it could all be false.

Partly because most rolling road dyno's do not conform to the same standards and units that many motor companies use to rate engines on an engine chassis (so this skews the numbers to start with).

And that the assumption that Nissans claim is legit, which based on past Skylines and pretty much every fast/power Japanese car to date would be slightly suspect.

10-11% would put the drivetrain at being more efficient than most manual 2wd cars (FWD or RWD) and considering the GTR has 2 extra diffs and 3 extra drive shafts to turn I find it a little difficult to believe. It's not as if Nissan have some secret technology to reduce friction to levels unachievable by other car makers. Nor can they break the laws of physics any easier.

I suspect the claim comes from. Nissan say the stock motor makes 480hp. On a rolling road it makes like 430rwhp so numptys think hay wow efficient drivetrain.

In reality its much more likely the drivetrain loses similar amounts to other comparable machines and Nissan have simply been lying about the hp claim. I suspect a stock car makes well over 550hp.

Remember the GTR-34 was claimed to make only 280PS (276hp SAE Net). As did the Impreza STi, Supra TT, NSX Type R and so on. We know all of these make more hp than claimed, so its logical to conclude the R35 factory hp claims are also bull.

AJI

5,180 posts

241 months

Thursday 24th September 2009
quotequote all
Are they using any special oils in the diffs ?

300bhp/ton

41,030 posts

214 months

Thursday 24th September 2009
quotequote all
AJI said:
Are they using any special oils in the diffs ?
I suspect so, but I also suspect no more special than Corvette, Porsche, Ferrari, etc do.

I'm not knocking the car, I love the GTR35 and it has a place of honour in my fantasy garage, but I don't believe Nissan have been anywhere near honest with its claims. smile

Marf

22,907 posts

265 months

Thursday 24th September 2009
quotequote all
Until someone pulls the VQ lump out of a GT-R and sticks it on a proper engine dyno, this debate will rage on and on.

300bhp/ton

41,030 posts

214 months

Thursday 24th September 2009
quotequote all
Marf said:
Until someone pulls the VQ lump out of a GT-R and sticks it on a proper engine dyno, this debate will rage on and on.
Yep it will wink

Although I don't see it as debate. I mean who is going to be upset if they find their car actually makes 70-100bhp more than they though? smile

Marf

22,907 posts

265 months

Thursday 24th September 2009
quotequote all
True that.